Advantech AIMB-240 Series

User’s Manual
AIMB-240 Series User’s Manual
35
2.4.4 Serial Port Header RS-232/422/485 Select (COM2/COM2 RS)
*Default
(COM2 RS)
RS-485 RS-422 RS-232*
pin define define pin
6 RXD232 RXD2 5
4 RXD422 RXD2 3
2 RXD485 RXD2 1
(COM2 )
Pin define define Pin
14 RXD485- RXD485+ 13
12 TXD485- TXD485+ 11
10 GND GND 9
8 RRI2# DDTR2# 7
6 CCTS2# TTXD2 5
4 RRTS2# RRXD2 3
2 DDSR2# DDCD2# 1
RS-422/485
RS-232
C
O
M
2
R
S
CO
M2